31/8 80mm 80mm 31/8
23/4 70mm 70mm 23/4
23/8 60mm 60mm 23/8
2 50mm 50mm 2
15/8 40mm 40mm 15/8
Focus on the centre of the thick
11/8 30mm 30mm 11/8
black line in the box below from an
angle of 45 degrees.
3 3
/4 20mm 20mm /4
9 9
/16 14mm 14mm /16
3 3
/8 10mm 10mm /8
15 15
/64 6mm 6mm /64
5 5
/64 2mm 2mm /64
This text should be perfectly in focus Focus here This text should be perfectly in focus
5 5
/64 2mm 2mm /64
15 15
/64 6mm 6mm /64
3 3
/8 10mm 10mm /8
9 9
/16 14mm 14mm /16
3 3
/4 20mm 20mm /4
11/8 30mm 30mm 11/8
15/8 40mm 40mm 15/8
2 50mm 50mm 2
23/8 60mm 60mm 23/8
23/4 70mm 70mm 23/4
31/8 80mm 80mm 31/8